ArticleRoyal Society open science2021
The cerebellar anatomy of red junglefowl and white leghorn chickens: insights into the effects of domestication on the cerebellum.
Article in Royal Society open science, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
6 citing papers in PubMed, 16 citations in OpenAlex.
- Domestication effects on crowing in chickens: variation between wild and captive red junglefowl and domestic white Leghorn and the genetic architecture of crowing vocalizations.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2025Article
- The quantitative anatomy of the hippocampal formation in homing pigeons and other pigeon breeds: implications for spatial cognition.Brain structure & function · 2024Article
- Selection for Reduced Fear of Humans Changes Brain and Cerebellum Size in Red Junglefowl in Line with Effects of Chicken Domestication.Brain sciences · 2023Article
- Proportional Cerebellum Size Predicts Fear Habituation in Chickens.Frontiers in physiology · 2022Article
- Neuronal and non-neuronal scaling across brain regions within an intercross of domestic and wild chickens.Frontiers in neuroanatomy · 2022Article
- The cerebellar anatomy of red junglefowl and white leghorn chickens: insights into the effects of domestication on the cerebellum.Royal Society open science · 2021Article
Corrections and comments
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Authors and funding
6 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Domestication is the process by which wild organisms become adapted for human use. Many phenotypic changes are associated with animal domestication, including decreases in brain and brain region sizes. In contrast with this general pattern, the chicken has a larger cerebellum compared with the wild red junglefowl, but what neuroanatomical changes are responsible for this difference have yet to be investigated. Here, we quantified cell layer volumes, neuron numbers and neuron sizes in the cerebella of chickens and junglefowl. Chickens have larger, more folded cerebella with more and larger granule cells than junglefowl, but neuron numbers and cerebellar folding were proportional to cerebellum size. However, chickens do have relatively larger granule cell layer volumes and relatively larger granule cells than junglefowl. Thus, the chicken cerebellum can be considered a scaled-up version of the junglefowl cerebellum, but with enlarged granule cells. The combination of scaling neuron number and disproportionate enlargement of cell bodies partially supports a recent theory that domestication does not affect neuronal density within brain regions. Whether the neuroanatomical changes we observed are typical of domestication or not requires similar quantitative analyses in other domesticated species and across multiple brain regions.
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